1:) 'Cannot determine any regulation with validity area'. => this is a "major error". Either the set up was not defined proeprly before SP change, or no tests have been done due to SP change. => this is really "bad" Without this: not tracking can happen etc.

2.) we must maintain the validity area of respective regulation => this is not "sufficient". You have to change "regulatory list" as well (please check OSS note for SVT set up and check code used in SVT) => i assume major error in set up of SVT

3.) I am assuming as primary step of validity failures , nothing was tracking ( Logs of tracking programme , planned Qty = 0 , confirmed Qty = 0) No mails were triggering as nothing was tracking from date of issue occuring. => based on 1.) and 2.) this is the clear conseuquence. As long as 1.) and 2.) is not "repaired" you will not get "tracking" results nad therefore quite clear no mail will be triggered

For: still iam checking with my in house technical/ business experts whether that validity is really not required due to which tracking was not occuring.

The "validity area" / "regulatory list" and "rating" topic must be set up properly. Either to support the "filling" process or to support the "tracking" process

Point 1 : I am checking for SP change as recently all systems upgradation was done and in addition to this I was just realized by seeing the logs of RREGCH_VT , there is a warning message that 'Cannot determine any regulation with validity area'.

According programming logic , we must maintain the validity area of respective regulation. In debugging i have identified that all planned orders of respective regulation was skipping due to failing of logic of validity area of regulation in TCG81 table.